Threadometer.



G. A. HAMMOND-KNOWLTON. THREADOMETER.

APPLICATION TILED MAY 12 1910.

1,024,332. Patented Apr. 23, 1912.

INVENTOR ATTORNEYS WITNESSES:

COLUMBIA PLANOGRAPH co.. WASHINGTON, D. C

CLARENCE A. HAMMoNn-KNowLroN, on NEW YORK, N. Y.

THREADOMETER.

Specification of Letters Patent.

Patented Apr. 23, 1912.

Application filed May 12, 1910. Serial No. 560,977.

To all whom it may concern:

Be it known that I, CLARENCE A. HAM- MOND-KNOWLTON, a citizen of the United States, and a resident of the city of New 5 York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Threadometer, of which the following is a full, clear, and exact description.

The invention is an improvement in threadometers, and has in view such a measuring instrument as embodies a series of registering disks which are driven by the thread wheel both forwardly and rearwardly, and are mounted on a setting device by which the several disks are readily returned to a starting position, the instrument being compactly built, with the disks and adjacent parts contained within a close-fitting case through which the reading of the meter is conveniently presented.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of refer- 5 ence indicate corresponding parts in all the views.

Figure 1 is a plan of a threadometer constructed in accordance with my invention; Fig. 2 is a side view of the same; Fig. 3 is an end view of the threadometer; Fig. 4 is a section on the line 4-4c of Fig. 1; Fig. 5 is a section on the line 5--5 of Fig. 1; Fig. 6 is a section on the line 66 of Fig. 1; Fig. 7 is a face view of one of the registering disks; and Fig. 8 is a perspective View of the shaft of the settingdevice.

In the construction of the preferred embodiment of my invention, a base 5 is provided with upright supports 6, spaced apart,

0 with one of the supports shown to be arranged adjacent to the rear end of the base, and the other support at an intermediate point and having a short or stub shaft 7 journaled therein. Between the supports 6 5 are arranged a number of registering disks 8, which are mounted on the shaft 9 of a setting device, which shaft is revolubly supported at one end within a socket 10 formed in the stub shaft 7, and near its opposite end 0 in the outer supporting plate 6, beyond which the shaft 9 has an attached thumbwheel or other operating member 10. Each registering disk 8 has a pinion 11 secured to each of its faces, the pinions at one side of the disks having a full complement of teeth, and the pinions at the opposite side having two teeth only, as shown in Fig. 7, each set of pinions between adjacent disks meshing with a similar pinion 12 journaled on a shaft 13, also carried in the supports 6, the several pinions being held against displacement, except when forcibly turned, by spring-pressed pawls 14:. Each of the registering disks 8 carries an inwardly projecting pawl 15, which is shown to be pivotally arranged at the inner side of one of the pinions 11, and located to engage within a ratchet groove 16 extending longitudinally of the shaft 9 of the setting device, this part of the shaft being enlarged, as clearly shown in Fig. 8. The pinion 11 adjacent to the stub shaft 10 is formed integrally or otherwise rigid therewith and made in the na ture of a plain plate, Without teeth, if desired, as also the pinion adjacent to the other support 6. However, the registering disks will, in the practical embodiment of the instrument, be generally of a uniform construction, as they are to be had commercially in this manner, and I make no claim for them per so.

On the outer end of the stub shaft is j ournaled a worm gear 17 the worm gear driving the stub shaft through a pinion 18 and a pawl 19, the pawl 19, as shown in Fig. 4;, being carried by the worm wheel and pressed into engagement with the teeth thereof by a spring 20. An operating or driving shaft 21 is journaled in suitable bearings carried by the base 5 and extends to one side thereof, where it is provided with a grooved thread-wheel 22, the inner portion of the shaft being arranged under the worm gear and having an attached worm 23 in mesh therewith.

A casing 24 closely fits over the support 6 and is extended sufliciently beyond the illtermediate support to inclose the worm and worm wheel, this end of the casing being closed and having a slot 25 extending in from the bottom to receive the driving shaft 21, the opposite end of the casing being formed by the adjacent support 6. The casing 24L has an opening 26, through which the numerals of the recording disks are readable, the opening being arranged at that side of the instrument toward the thread wheel, whereby it is conveniently positioned for the observance of the operator, the opening, as is the usual practice in meters of this construction, being covered with suitable trans: parent material, such as celluloid.

In the operation of the threadometer, the thread is carried around the thread-wheel one or more times, and in its travel causes the operating shaft to be driven, which in turn transmits its movement through the intermediate connecting mechanism to the first of the registering disks; the threadwheel, gearing and disks being of a relative size and construction to register the length of thread passing over the wheel, in yards, or any other convenient unit, the disks being successively operated in a well-known manner,the disks being adapted to be driven either forward or backward without interfering with the setting device, the setting shaft of the latter, when turned in one direction, which in the present embodiment of the invention is to the right, being engaged by the pawls 15 as the corresponding numbers of the several recording disks are brought into alinement.

I am aware that I am not the first to construct a threadometer. I, however, believe that I am the first to construct such an instrument embodying a series of registering disks operated from the thread-wheel in either direction and mounted on the shaft of a setting device.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

In a threadometer, an actuating stub shaft having a socketed end, a setting shaft having one end freely engaging said socketed end and having a ratchet groove therein, a series of registering disks mounted on said setting shaft, a pinion secured to each face of each disk, the pinions on one side of each disk having the full complement of teeth and the pinions on the opposite side having two teeth, a driving shaft, pinions mounted 011 said driving shaft, each pinion meshing with a set of pinions between adjacent disks, means holding said pinions against displacement, and an inwardlyprojecting pawl carried by each disk and adapted to engage said ratchet groove.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CLARENCE A. HAMMOND-KNOWLTON. lVitnesses:

ISABELLE HAMMoND-KNowL'roN, GEORGE O. BALCH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

